KMX 125

1999 Kawasaki KMX 125 Technical Analysis & Specification Breakdown

Positioned in Kawasaki's enduro - offroad motorcycle lineup, the 1999 Kawasaki KMX 125 pairs a 125 cc (7.6 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 15 HP (10.9 kW) at 8,500 rpm while maximum torque reaches 13 Nm (9.6 lb-ft) at 6,600 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 120 HP per liter and a 1,900 rpm working window between peak torque (6,600 rpm) and peak power (8,500 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the KMX 125 measures 115 kg (254 lbs) wet (curb), translating to a power-to-weight ratio of 0.13 HP/kg (7.67 kg per horsepower). Rider ergonomics and chassis geometry center around a 860 mm (33.9 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,375 mm (54.1 in) wheelbase engineered for quick, flickable steering geometry. The 9.3-liter (2.5 US gal) fuel tank paired with a rated consumption of 5.4 L/100 km provides an estimated theoretical range of roughly 172 km (107 miles) between fill-ups, while factory top speed is listed at 106 km/h (66 mph).

Within MotoLibrary's Kawasaki archive, this model family spans 7 indexed model years from 1986 to 2001, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.